100 kcal ~= 6973 watts Multiple sources say it's about 100 kcal per hour, not minute. At any rate, that's about 7kW.

I wonder how much energy was spent getting to that 5 watts.

Time, my friend, time. Women need time invested in them. Not money, not energy. Time.

You lost "kilo" when querying. Or, more likely, your source lost it.